Focus on: Audit Sampling—Module 7
SAMPLING
Sampling is used in both tests of controls and substantive testing.
- Nonstatistical samples are based exclusively on auditor’s judgment
- Statistical samples involve mathematics and probabilities
Sampling Risk
Audit risk is affected by sampling risk.
- Sample for performance of tests may not be representative of population
- Conclusions drawn may not be same as if sample was representative
Sampling Risk and Tests of Control
When sample not representative in a test of control, 2 possible errors
Risk of Assessing Risk Too High (Underreliance)—Auditor will conclude that control is not effective when it actually is
- Auditor will inappropriately assess level of control risk at maximum and perform more substantive testing than necessary
- Resulting audit will be inefficient
Risk of Assessing Risk Too Low (Overreliance)—Auditor will conclude that control is effective when it actually is not
- Auditor will inappropriately assess level of control risk below the maximum and perform less substantive testing than necessary
- Resulting audit may be ineffective and auditor may issue inappropriate report
Sampling errors in tests of controls
The test of controls sample indicates: | Adequate for planned assessed level of control risk | Inadequate for planned assessed level of control risk |
Extent of operating effectiveness is adequate | Correct Decision | Incorrect Decision (risk of assessing control risk too low) |
Get Wiley CPAexcel Exam Review 2014 Focus Notes: Auditing and Attestation now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.